EP 0691659 A1 19960110 - Sacrificial anode, process for electrodecontamination of low-level liquid radioactive wastes, and device for carrying out this process
Title (en)
Sacrificial anode, process for electrodecontamination of low-level liquid radioactive wastes, and device for carrying out this process
Title (de)
Opferanode, elektroauflösung flüssiger Schwachradioaktiver Abfälle sowie Vorrichtung zur Durchführung dieses Verfahrens
Title (fr)
Anode consommable, procédé d'électrodissolution appliqué à la décontamination d'effluents liquides faiblement radioactifs, et dispositif de mise en oeuvre de ce procédé
Publication
Application
Priority
FR 9407249 A 19940614
Abstract (en)
A consumable anode consists of in wt.% 20-70 Fe, 20-40 Co, and 5-30 Al. The anode may also contain max. 20% Ni, max. 10 Ti, max. 5 Cu, and max. 5 Nb. The effluent is passed into the reactor (2) fitted with anode (12), cathode (10), reference electrode (16), system to control the temperature (18) and a heat exchanger (20). The pH of the effluent is maintained at a value of at least 1 by system (5) and some of the resultant sludge from the reactor bottom is recycled back to the reactor via device (24). The rest of the sludge is passed to a solid/liquid separator (34). To decontaminate liquid effluents which have low level radioactivity. <IMAGE>
Abstract (fr)
Selon l'invention, une anode consommable constituée d'un alliage métallique comporte : entre 20 et 70% en masse de fer, entre 20 et 40% en masse de cobalt, entre 5 et 30% en masse d'aluminium. A ces constituants de base peuvent éventuellement être additionnés des éléments comme le nickel, et/ou le titane, et/ou le cuivre, et/ou le niobium. Le procédé de décontamination met en oeuvre une électrodissolution de cette anode. <IMAGE>
IPC 1-7
IPC 8 full level
C02F 1/461 (2006.01); C02F 1/463 (2006.01); C02F 1/465 (2006.01); G21F 9/04 (2006.01); G21F 9/06 (2006.01); C02F 1/66 (2006.01); C02F 9/00 (2006.01)
CPC (source: EP US)
C02F 1/46109 (2013.01 - EP US); C02F 1/463 (2013.01 - EP US); G21F 9/04 (2013.01 - EP US); G21F 9/06 (2013.01 - EP US); C02F 1/66 (2013.01 - EP US); C02F 9/00 (2013.01 - EP US); C02F 2001/46133 (2013.01 - EP US); C02F 2101/006 (2013.01 - EP US); C02F 2201/46155 (2013.01 - EP US)
Citation (applicant)
F. KEPAK ET AL., INTERNATIONAL JOURNAL OF APPLIED RADIATION AND ISOTOPES, vol. 19, 1968, pages 485 - 487
Citation (search report)
- [A] EP 0295696 A1 19881221 - ANDCO ENVIRONMENTAL PROCESSES [US]
- [Y] DATABASE WPI Section Ch Week 3882, Derwent World Patents Index; Class D15, AN 82-80737E
- [Y] DATABASE WPI Week 1980, Derwent World Patents Index; AN 80-33722C
- [YD] KEPAK ET AL.: "SORPTION OF RADIORUTHENIUM IN COLLOIDAL AND IONIC STATE ON FERROUS HYDROXIDE FORMED BY ELECTRODISSOLUTION OF IRON ANODE", INTERNATIONAL JOURNAL OF APPLIED RADIATION AND ISOTOPES, vol. 19, UK, pages 485 - 487, XP024705327, DOI: doi:10.1016/0020-708X(68)90103-8
- [A] DATABASE WPI Section Ch Week 4688, Derwent World Patents Index; Class D15, AN 88-328566
Designated contracting state (EPC)
BE CH DE ES GB LI
DOCDB simple family (publication)
EP 0691659 A1 19960110; EP 0691659 B1 19980325; DE 69501856 D1 19980430; FR 2721042 A1 19951215; FR 2721042 B1 19970131; JP H08112595 A 19960507; US 5633423 A 19970527
DOCDB simple family (application)
EP 95401351 A 19950612; DE 69501856 T 19950612; FR 9407249 A 19940614; JP 17051495 A 19950614; US 48955395 A 19950612